Amazon.com: ENHANCE Mechanical Keyboard O Ring Ultra-Quiet Switch Sound Dampeners Kit Soft 40A Clear (140pcs), Key Cap Remover, Cleaning Brush, Cloth and Accessory Bag - Mod Kit for Cherry MX, TTC, Kaihua :
Amazon.com: 200pcs Rubber O-Ring Keyboard Switch Dampeners Make Your Mechanical Keyboard Quieter with Keycap Remover Suitable for Cherry MX Key Kit Dampers 40A-L-0.2mm Reduction (Red) : Electronics
O Rings Sound Test - Soft/Firm Enhance - Razer Blackwidow Elite - Green Switches - YouTube
Amazon.com: ENHANCE Mechanical Keyboard O Ring Ultra-Quiet Switch Sound Dampeners Kit Soft 40A Clear (140pcs), Key Cap Remover, Cleaning Brush, Cloth and Accessory Bag - Mod Kit for Cherry MX, TTC, Kaihua :
Razer Huntsman TE Typing Sounds [LUBED STABS, FOAM, O-RINGs] | Razer Red Optical Switches - YouTube